Book 1 of Tamiya's early educational projects. These use the Tamiya sets for Wheels and Tracks, pulley set, motor and gearbox sets, submarine motor and so on. This is the Japanese edition, I don't know if it was ever released in English but it is self-explanatory. I never saw a book #2. I had great fun building these when I was a kid living in Japan for half a year in 1977.